Heap-based buffer overflow in pidgin-otr - CVE-2016-2851
Published: April 8, 2016 / Updated: July 29, 2020
Vulnerability identifier: #VU32323
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2016-2851
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in Integer overflow in proto.c in libotr before 4.1.1 on 64-bit platforms. A remote attacker can use a series of large OTR messages to trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
pidgin-otr
Gentoo Linux
Fedora
Opensuse
libotr (Alpine package)
libotr
Gentoo Linux
Fedora
Opensuse
libotr (Alpine package)
libotr
How to mitigate CVE-2016-2851
Update to version 4.1.1.
pidgin-otr - update to 4.1.1
libotr (Alpine package) - update to 4.1.1-r0
libotr - addressed in versions 4.1.1-1.fc22, 4.1.1-1.fc23, 4.1.1-1.fc24
libotr (Alpine package) - update to 4.1.1-r0
libotr - addressed in versions 4.1.1-1.fc22, 4.1.1-1.fc23, 4.1.1-1.fc24
Links to Public Exploits and PoC-codes
External References
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00021.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00030.html
- http://seclists.org/fulldisclosure/2016/Mar/21
- http://www.debian.org/security/2016/dsa-3512
- http://www.securityfocus.com/archive/1/537745/100/0/threaded
- http://www.securityfocus.com/bid/84285
- http://www.ubuntu.com/usn/USN-2926-1
- https://lists.cypherpunks.ca/pipermail/otr-users/2016-March/002581.html
- https://security.gentoo.org/glsa/201701-10
- https://www.exploit-db.com/exploits/39550/
- https://www.x41-dsec.de/lab/advisories/x41-2016-001-libotr/